package com.micro.config;


import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.ThreadPoolExecutor;

/**
 * @author 郑伟业
 * 线程池工具类
 */
@Configuration
@EnableAsync
public class ThreadExecutorConfig {
    @Bean
    public ThreadPoolTaskExecutor threadPoolTaskExecutorLog() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(10);//配置核心线程数
        executor.setMaxPoolSize(30);//配置最大线程数
        executor.setQueueCapacity(99999);//配置队列大小
        executor.setKeepAliveSeconds(60);
        executor.setThreadNamePrefix("mqExecutor-");//配置线程池中的线程的名称前缀

        //对拒绝task的处理策略
        // rejection-policy：当pool已经达到max size的时候，如何处理新任务
        // CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());

        //执行初始化
        executor.initialize();
        return executor;
    }
}
